PTR PTR-91 GIR .308 Win 18in Green Synthetic 10+1
About this product
The PTR PTR-91 GIR is a modern American-manufactured semi-automatic rifle built on the robust H&K G3 pattern, featuring an 18-inch match-profile barrel and chambered in .308 Winchester for reliable, hard-hitting performance. It uses the proven roller-delayed blowback action, known for its durability and ability to handle high-pressure ammunition without a gas system. This specific configuration includes a 10-round magazine and a fixed green synthetic stock, making it a practical choice for shooters who value mechanical simplicity over modularity.
What is the PTR PTR-91 GIR used for?
The PTR-91 GIR is engineered as a durable, hard-use field rifle suitable for extended range sessions, precision-oriented hunting in open terrain, and as a serious defensive carbine. Its heavy 9.5-pound weight and sharp 9-10 pound trigger pull make it less than ideal for snap-shooting or all-day carry, but the 18-inch tapered barrel provides excellent velocity and the 1:10 twist rate stabilizes a wide range of bullet weights from 147gr to 175gr consistently. Think of this as a workhorse rifle, not a lightweight tactical tool like the PTR-91 GI with its lighter barrel profile.
How does the PTR-91 GIR compare to the Stevens 334 Rifle in .308?
The PTR-91 GIR offers fundamentally different mechanics and a higher rate of potential fire than a bolt-action rifle like the Stevens 334 Rifle. Where the Stevens 334 is a simpler, lighter bolt-action for deliberate, single-shot precision, the PTR is a semi-automatic platform built to deliver rapid, powerful follow-up shots; the Stevens will almost always be more accurate from a bench due to its locked breech, but the PTR gives you ten rounds of .308 on tap in about 3-4 seconds with practiced reloads. For long-range target shooting, choose the Stevens; for a versatile, high-capacity .308 rifle, the PTR is the better tool.
What does it weigh and what are the dimensions?
Unloaded, the PTR-91 GIR weighs 9.50 pounds (152 ounces or 4.31 kg), making it nearly two pounds heavier than many modern AR-10 pattern rifles. The overall length is 40.50 inches, with an 18-inch barrel; this specific length avoids NFA classification as a Short-Barreled Rifle (SBR), keeping it in Title I firearm territory. The width across the receiver is 1.58 inches, and the fixed stock adds significant bulk that cannot be collapsed or folded without modification and a Form 1 tax stamp.
Who is this NOT for?
This rifle is not for new shooters, those seeking a lightweight hunting rifle, or anyone on a tight budget for accessories and ammunition. The 9-10 pound trigger pull requires significant finger strength and practice to master, and the 9.5-pound weight makes it cumbersome for extended off-hand shooting or backcountry packing. Furthermore, the proprietary magazine system means you cannot use standard AR-10 or FAL magazines, locking you into PTR/HK-pattern magazines that cost $40-60 each.
What's in the box?
You receive the rifle, one 10-round steel magazine, and a basic operator's manual—no optics, sling, or cleaning kit. The rifle ships with a threaded barrel (thread pitch typically 5/8x24), but you must supply your own thread protector or muzzle device. Be aware that some units, as noted, may show minor cosmetic wear on the green synthetic stock; this is common with this finish and does not affect function.
Is the PTR-91 GIR worth it at $1550.99?
At $1550.99, the PTR-91 GIR occupies a specific niche, offering robust, battle-proven mechanics in a off-the-shelf, non-NFA package. It's worth the price if you specifically want a roller-delayed .308 rifle that avoids the complexity and potential tuning of a gas-operated AR-10, and you're willing to accept its weight and trigger for the sake of legendary reliability. However, at this price point, you are close to entry-level AR-10 territory, which offers significantly better ergonomics and aftermarket support; buy the PTR for its action, not for its features.
Specs at a glance
Video review
Pros & cons
What works
- Roller-delayed blowback action handles hot .308 loads without adjustable gas blocks—eliminates a common AR-10 failure point.
- 40.50-inch overall length with 18-inch barrel avoids NFA SBR classification—ships direct to FFL.
- Parkerized finish on receiver provides superior corrosion resistance compared to basic Cerakote on many budget rifles.
- Welded top rail is precision-aligned for optics—holds zero better than clipped-on rails common on other PTR models.
Trade-offs
- Trigger pull is a heavy 9–10 lbs—requires dedicated practice or a $250+ aftermarket trigger job to improve.
- Proprietary magazine system—10-round mags cost $45+ each, versus $20 for PMAGs for an AR-10.
- Fixed stock cannot be adjusted for length of pull—not ideal for shooters under 5'8" or over 6'2" without modification.
- Weighs 9.50 lbs unloaded—1.8 lbs heavier than a comparable Diamondback DB10 AR-10, noticeable during extended carry.
Expert review
Key attributes
| upc | 897903002428 |
| manufacturer | PTR |
| manufacturer part number | 400 |
| action | Semi-Auto |
| barrel length | 18" |
| caliber/gauge | .308 / 7.62 NATO |
| capacity | 10 + 1 |
| sights | Iron |
Frequently asked questions
- Is the PTR-91 GIR compatible with original H&K G3 parts?
- Yes, the PTR-91 GIR has high parts commonality with the H&K G3 pattern. The roller-lock bolt group, trigger pack, furniture (with minor fitting), and magazines are generally interchangeable. Consult PTR Industries for specific warranty and compatibility guidance before installing non-PTR components.
- Does this rifle fit in a standard 42-inch rifle case?
- Barely. With an overall length of 40.50 inches, the PTR-91 GIR will fit diagonally in most 42-inch soft cases but requires careful placement. For a secure fit with optics mounted, I recommend a hard case with a minimum interior length of 44 inches from brands like Plano or Pelican.
- What muzzle devices does the threaded barrel accept?
- The 18-inch barrel is threaded 5/8x24, the standard for .30 caliber rifles. This pitch accepts a vast array of muzzle brakes, flash hiders, and .30 Cal suppressors. Always time and torque devices to manufacturer specifications, typically 15-20 ft/lbs for brakes.
- How long does it take to field strip for cleaning?
- A basic field strip—removing the bolt carrier group and trigger pack—takes about 60 seconds with practice. Full disassembly of the roller-lock assembly for deep cleaning adds another 5-7 minutes. It's simpler than an AR-10 but requires a specific locking piece tool for detailed work.
- Can I swap the fixed stock for a collapsible one?
- Yes, but with a major caveat. Installing a collapsible or folding stock on this rifle, without the proper barrel length, would create a Short-Barreled Rifle (SBR) regulated under the National Firearms Act. This requires submitting ATF Form 1, paying a $200 tax, and receiving approval before modification—a 30-90 day process.