Quick Answer
What is the SA-9 Gen 2? A closed-bolt, blowback-operated 9mm pistol built on Shield Arms' patented Folding Lower Receiver. Accepts standard Glock double-stack 9mm magazines (G17, G19, etc.). Folds from 23.5" to just 13" for compact storage and transport. Features last round bolt hold open, premium components, and includes Mountain Partisan Sling.
- Magazine Compatibility: Glock 17, 19, 26, 33-round mags, and aftermarket extensions
- Compact Storage: 13" folded, 23.5" unfolded
- FFL Required: Ships to your local FFL dealer (7-10 day processing)
Gen 2 Improvements - Enhanced Performance & Compatibility
The Shield Arms SA-9 Gen 2 is the evolved version of Shield Arms' popular folding 9mm pistol platform. Built on the revolutionary patented Folding Lower Receiver (FLR), the SA-9 Gen 2 combines AR-15 ergonomics and modularity with the reliability and affordability of Glock magazine compatibility - all in a platform that folds to just 13 inches.
The Gen 2 model represents significant improvements over the original SA-9, including updated aesthetics, a completely redesigned magazine release for more positive function, integrated Last Round Bolt Hold Open (LRBHO) wire, and enhanced overall compatibility with Glock magazines and aftermarket accessories.
Perfect for: Truck guns, backpack carry, home defense, range use, and anyone seeking a compact, reliable 9mm pistol caliber carbine (PCC) that accepts affordable, widely-available Glock magazines.
Key Features & Advantages
Glock Magazine Compatibility
- Accepts standard Glock double-stack 9mm magazines - G17 (17rd), G19 (15rd), G26 (10rd), 33-round extended, and aftermarket options
- Redesigned magazine release (Gen 2) - more positive engagement and reliable magazine drops
- Cost-effective magazines - OEM Glock mags widely available and affordable
- Aftermarket support - compatible with Magpul, ETS, Korean mags, and magazine extensions
- Cross-platform compatibility - use same magazines as your Glock pistols
Folding Lower Receiver Innovation
- Patented FLR design - no adapter required, folding mechanism integrated into receiver
- Compact folded length: 13 inches - fits in backpacks, bags, vehicle storage
- Quick deployment - unfolds and locks in seconds
- Robust folding mechanism - designed for thousands of folding cycles
- 7075-T6 billet aluminum - aerospace-grade strength and durability
Gen 2 Enhancements
- Integrated Last Round Bolt Hold Open (LRBHO) wire - bolt locks back on empty magazine
- Redesigned magazine release - improved reliability and positive function
- Updated aesthetics - modernized appearance and refined lines
- Enhanced compatibility - works with wider range of Glock magazines
- Improved ergonomics - refined controls and handling
Premium Components
- ALG Advanced Combat Trigger - crisp, clean trigger pull
- Radian Talon Ambidextrous Safety - enhanced ergonomics for all shooters
- Radian Raptor Charging Handle - ambidextrous, smooth operation
- SB Tactical SBA3 Pistol Brace - adjustable, minimalist design
- B5 Systems Type 22 Grip - comfortable, textured grip surface
- Midwest Industries 6" COMBAT Series Handguard - M-LOK compatible, slim profile
- Includes Mountain Partisan Sling - premium quality carry sling
Technical Specifications
| Model |
SA-9 Gen 2 Folding Pistol |
| Caliber |
9mm Parabellum (9x19mm) |
| Operating System |
Closed-bolt, blowback-operated |
| Magazine Compatibility |
Standard Glock double-stack 9mm (G17, G19, G26, extended) |
| Barrel Length |
7.5 inches |
| Barrel Material |
4150 Chrome Moly Vanadium |
| Barrel Finish |
QPQ Nitride (corrosion-resistant) |
| Barrel Threading |
1/2x28 TPI (suppressor/muzzle device compatible) |
| Upper/Lower Material |
Shield Arms 7075-T6 Billet Aluminum |
| Handguard |
Midwest Industries 6" COMBAT Series (M-LOK) |
| Bolt Carrier Group |
Black Nitride Coated Blowback |
| Buffer |
Shield Arms Proprietary 7.0 oz (user-configurable steel weights) |
| Trigger |
ALG Advanced Combat Trigger |
| Safety Selector |
Radian Talon Ambidextrous |
| Charging Handle |
Radian Weapon Systems Raptor (Ambidextrous) |
| Pistol Grip |
B5 Systems Type 22 |
| Pistol Brace |
SB Tactical SBA3 Pistol Stabilizing Brace |
| Muzzle Device |
A2 Flash Hider (1/2x28) |
| Overall Length (Unfolded) |
23.5 inches |
| Overall Length (Folded) |
13 inches |
| Weight (Empty) |
5 lbs 9 oz |
| Last Round Bolt Hold Open |
Yes (integrated LRBHO wire - Gen 2) |
| Included Magazine |
2x Glock 19 with Pre-Installed Magazine Extension (Black) |
| Included Accessories |
Mountain Partisan Sling |
| Finish Options |
Black, Fallout, Montana Mud, Pineland (in-house Cerakote) |
| FFL Required |
Yes |
| Warranty |
100% Lifetime |
| Made In |
USA (Montana) |
| SKU |
SA-SA9-GEN2 |
Custom Cerakote Finish Options
All Cerakote finishing is done in-house at Shield Arms. Each firearm is unique - no two are exactly alike!
Available Finish Options
Black - Classic matte black Cerakote finish. Professional appearance, excellent durability and corrosion resistance. The most popular choice for duty, defense, and general use.
Fallout - Custom distressed pattern inspired by post-apocalyptic aesthetics. Unique worn appearance with character. Perfect for tactical/battle-worn look enthusiasts.
Montana Mud - Earth-tone camouflage pattern featuring browns, tans, and grays. Excellent for hunters and outdoor use. Blends naturally with wilderness environments.
Pineland - Military-inspired green and brown camouflage pattern. Named after the fictional location used in Special Forces training. Tactical aesthetic with outdoor versatility.
Important Notes:
- All patterns are hand-applied - expect natural variation
- Custom finishes add unique character to each firearm
- Select your preferred finish during checkout
- Cerakote provides superior corrosion and wear resistance
- All finishes available at the same base price
Why Choose the SA-9 Over Traditional PCCs?
| Feature |
SA-9 Gen 2 |
Traditional 9mm PCC |
| Folding Capability |
Yes - 13" folded (patented FLR) |
No - fixed length or requires expensive adapter |
| Folded Length |
13 inches |
N/A or 20"+ with adapter |
| Magazine Compatibility |
Glock double-stack (affordable, widely available) |
Varies (often proprietary or expensive) |
| Last Round Bolt Hold Open |
Yes (integrated LRBHO wire) |
Varies (often requires aftermarket solutions) |
| AR-15 Controls |
Yes - familiar controls and ergonomics |
Varies |
| Aftermarket Support |
Extensive (AR-15 platform + Glock mags) |
Limited to platform-specific parts |
| Weight |
5 lbs 9 oz |
Varies (typically 5-7 lbs) |
| Suppressor Ready |
Yes (1/2x28 threaded barrel) |
Varies |
| Made In |
USA (Montana) |
Varies |
Glock Magazine Compatibility Guide
The SA-9 Gen 2 accepts all standard Glock double-stack 9mm magazines:
OEM Glock Magazines
- Glock 17 (17 rounds) - Full-size standard capacity
- Glock 19 (15 rounds) - Compact standard capacity (included with SA-9)
- Glock 26 (10 rounds) - Subcompact option for restricted states
- Glock 33-round magazine - Extended capacity for range use
Magazine Extensions
Note: The SA-9 ships with two Glock 19 magazine with Shield Arms pre-installed magazine extension (black finish).
Included Accessories & What You'll Need
What's Included
- SA-9 Gen 2 Complete Pistol - fully assembled and test-fired
- (2) Glock 19 Magazine - with pre-installed Shield Arms magazine extension (black)
- Mountain Partisan Sling - premium quality carry sling
- Owner's Manual - operation, maintenance, and safety instructions
- Warranty Card - lifetime warranty registration
Recommended Accessories
- Additional Glock Magazines - G17, G19, or 33-round extended
- Optic Mount - add red dot or holographic sight
- Suppressor - threaded barrel ready for 9mm suppressor (1/2x28)
- Sling - additional slings for different carry methods (one included)
- M-LOK Accessories - lights, grips, or rail sections for handguard
- Magazine Extensions - increase capacity beyond standard
Optional Upgrades
- Upgraded trigger (Geissele, Trigger Tech, etc.)
- Enhanced charging handle
- Upgraded pistol brace or folding stock adapter
- Muzzle brake or compensator (replaces A2 flash hider)
- Weapon light (Streamlight, SureFire, etc.)
- Red dot sight (Holosun, Trijicon, Aimpoint)
Use Cases & Applications
Perfect For:
Truck Gun / Vehicle Storage - 13" folded length fits easily in center consoles, under seats, or in glove boxes. Quick deployment when needed.
Backpack / Get Home Gun - Compact folded size ideal for emergency preparedness bags, hiking packs, or discreet transport. Reliable 9mm performance.
Home Defense - Easy-handling 9mm with 15+ round capacity. Minimal overpenetration compared to rifle calibers. Familiar AR-15 controls.
Range / Training - Affordable 9mm ammunition for high-volume practice. Compatible with your Glock pistol magazines. Fun to shoot with minimal recoil.
Competition (PCC Division) - Competitive in pistol caliber carbine divisions. Glock magazine compatibility provides wide mag selection. LRBHO for fast reloads.
Suppressed Shooting - Threaded barrel ready for 9mm suppressor. Subsonic 9mm ammunition available for ultra-quiet shooting.
Apartment / Urban Defense - 9mm reduces overpenetration risk in multi-family dwellings. Compact size easy to maneuver in tight spaces.
FFL Transfer & Shipping Information
The SA-9 Gen 2 is a pistol and requires transfer through a Federal Firearms Licensed (FFL) dealer.
Shipping Timeline
Important: Due to high demand and FFL processing requirements, shipping may take 7-10 business days after your order is placed and FFL documentation is received.
How FFL Transfer Works
- Place Your Order: Purchase the SA-9 Gen 2 and select your preferred Cerakote finish
- Select Your FFL: Choose your preferred local FFL dealer during checkout
- FFL Documentation: Your chosen FFL will send their license to Shield Arms
- Processing & Shipping: Shield Arms processes (7-10 days) and ships to your FFL
- Pickup: Visit your FFL to complete ATF Form 4473 background check and take possession
Important Requirements
- Must be 21+ years old to purchase a pistol
- Must comply with all federal, state, and local firearms laws
- Your FFL may charge a transfer fee (typically $25-50)
- Cannot be shipped to prohibited states/localities - check your local laws
- Pistol brace regulations: Verify current ATF rules in your jurisdiction
Need help finding an FFL? Shield Arms can assist you in locating an FFL dealer near you. Contact customer service after placing your order.
Frequently Asked Questions
What's the difference between Gen 1 and Gen 2 SA-9?
The Gen 2 SA-9 features several important improvements: integrated Last Round Bolt Hold Open (LRBHO) wire so the bolt locks back on empty magazine, updated aesthetics with modernized appearance, and enhanced overall compatibility with Glock magazines and accessories. Gen 2 represents the refined, production-optimized version of the SA-9 platform.
Can I use Glock magazines from my pistol?
Yes! The SA-9 accepts all standard Glock double-stack 9mm magazines: G17 (17rd), G19 (15rd), G26 (10rd), 33-round extended, and many aftermarket options. If you already own Glock pistols, you can use the same magazines across platforms.
Does the SA-9 have last round bolt hold open?
Yes. The Gen 2 SA-9 features an integrated Last Round Bolt Hold Open (LRBHO) wire. When your magazine is empty, the bolt automatically locks back, providing a clear indication you're out of ammunition and enabling faster reloads.
Can I fire the SA-9 while folded?
No. Like all folding AR platform firearms, the SA-9 cannot be fired while folded. The folding mechanism is designed for compact storage and transport only. You must unfold and lock the receiver before firing.
Is the SA-9 suppressor ready?
Yes. The SA-9 features a 1/2x28 threaded barrel compatible with all 9mm suppressors using standard threading. Simply remove the A2 flash hider and install your suppressor. The closed-bolt, blowback operation is ideal for suppressed shooting.
What's the barrel length and is it considered a pistol or SBR?
The SA-9 has a 7.5" barrel and is configured as a pistol with an SB Tactical SBA3 pistol stabilizing brace. Because it has a pistol brace (not a stock) and a barrel under 16", it's classified as a pistol under federal law and does not require NFA registration or tax stamp. However, always verify current ATF regulations and your state/local laws.
Can I add a red dot or optic?
Yes. The SA-9's upper receiver has a flat-top Picatinny rail that accepts any standard AR-15 optic mount. Popular options include Holosun, Trijicon MRO, Aimpoint, SIG Romeo, and holographic sights. An optic is not included but can be easily added.
How reliable is blowback operation with 9mm?
Very reliable. Blowback operation is proven and simple - there's no gas system to maintain. The SA-9 uses a proprietary 7.0 oz buffer with user-configurable steel weights to optimize cycling with various ammunition types. The closed-bolt design enhances accuracy compared to open-bolt systems.
What ammunition does the SA-9 prefer?
The SA-9 is designed to cycle reliably with all standard 9mm ammunition: 115gr, 124gr, and 147gr in both FMJ and hollow point. For suppressed use, 147gr subsonic ammunition provides the quietest performance. The configurable buffer allows tuning for specific ammunition if needed.
Why should I choose the SA-9 over other 9mm PCCs?
The SA-9 offers unique advantages: patented folding capability without adapters (13" folded), Glock magazine compatibility (affordable, widely available), integrated LRBHO, familiar AR-15 controls and modularity, premium components (Radian, ALG, SB Tactical), American-made quality, and lifetime warranty. It's the only folding 9mm PCC with this combination of features.
What is the warranty on the SA-9?
Shield Arms backs the SA-9 Gen 2 with a 100% Lifetime Warranty against manufacturing defects. If you experience any issues with materials or workmanship, Shield Arms will repair or replace it free of charge.
Who Should Buy the SA-9 Gen 2?
- Truck Gun Owners - Need compact folding pistol for vehicle storage
- Preppers & Survivalists - Want reliable, compact get-home gun for emergency bags
- Home Defenders - Prefer 9mm over rifle calibers for reduced overpenetration
- Glock Owners - Already have Glock magazines, want rifle-format 9mm
- PCC Competitors - Compete in pistol caliber carbine divisions
- Suppressor Enthusiasts - Threaded barrel ready for ultra-quiet shooting
- Apartment/Urban Dwellers - Need effective defense with minimal overpenetration risk
- Range Enthusiasts - Want affordable 9mm training platform with rifle ergonomics
- Backpackers/Hikers - Compact folding design for wilderness carry
- Innovation Fans - Appreciate cutting-edge folding lower receiver technology
Summary: Is the SA-9 Gen 2 Right for You?
The Shield Arms SA-9 Gen 2 Folding 9mm Pistol represents the perfect combination of innovation, practicality, and performance. Built on the revolutionary patented Folding Lower Receiver, the SA-9 delivers unmatched compact storage capability while maintaining the reliability and affordability of Glock magazine compatibility.
Key Advantages:
- Folds from 23.5"to just 13" - most compact 9mm PCC available
- Accepts affordable, widely-available Glock double-stack 9mm magazines
- Gen 2 improvements: LRBHO, redesigned mag release, enhanced compatibility
- Premium components: Radian, ALG, SB Tactical, B5 Systems, Midwest Industries
- Closed-bolt blowback operation - proven reliability
- Suppressor ready with 1/2x28 threaded barrel
- Custom Cerakote finishes available (in-house)
- Includes Mountain Partisan Sling
- Made in USA with lifetime warranty
Perfect for: Truck guns, backpack carry, home defense, apartment/urban defense, competition PCC, suppressed shooting, range training, and anyone who values compact storage without compromising on reliability or performance.
Why SA-9 Over Other 9mm PCCs: The SA-9's patented folding lower receiver eliminates bulky adapters, Glock magazine compatibility provides affordability and cross-platform compatibility, Gen 2 enhancements deliver improved function, and American manufacturing ensures quality. It's the only 9mm PCC that folds this compactly while using Glock magazines.
Ready to order? Select your preferred Cerakote finish and add the SA-9 Gen 2 to your cart. Please note that due to high demand and FFL processing, shipping takes 7-10 business days. Your local FFL dealer will contact you when ready for pickup.
Questions before ordering? Contact Shield Arms customer service for expert guidance on the SA-9 Gen 2, FFL transfer process, or any other questions about this revolutionary folding 9mm pistol.
