PK Firearms Logo

Your home for AR-15 parts & accessories!

PK Firearms Logo

Rock River Arms Mid-Length A2 Chrome Lined Light Weight Rifle


This Rifle features a lightweight, govt. contour 16" Wilson chrome lined mid-length barrel and gas system, 1:9 twist, 5.56 NATO chamber,  2 stage match trigger and 6 pos stock. With AR15 bolt carrier group. Includes one 30 round mag, RRA hard case, manual & warranty.

Copy of FFL required for purchase.

No sales to California.

POF .308 14.5 Inch T-Rail Rifle - Permanently Attached Flash Hider


The POF .308 14.5 inch T-rail rifle features a 14.5 inch Rock Creek heavy contour, fluted barrel chambered in 7.62 X 51 NATO.  The barrel is manufactured from 4150 Mil-B-11595 CMV alloy (machine gun rated), has 5R polygonal right-handed, hand-lapped, button rifling with a 1:10 twist rate and is case hardened to 70 Rockwell.  This manufacturing process creates a corrosion resistant barrel that is 2 times harder than hammer forged barrels and 10 times thicker and harder than Mil-spec chrome lining.  This rifle utilizes a short stroke gas piston operating system with a rotatin

CMMG .308 Mk3 16 inch Stainless Steel Rifle - MOE LOWER (38AB136)


The CMMG .308 Mk3 16 inch Stainless Steel Rifle features a 16 inch barrel manufactured from 416 stainless steel chambered in .308 Winchester with a 1:10 twist and a 5/8-24 threaded muzzle.  The upper and lower receivers are hard anodized, teflon coated, billet 6061-T6 aluminum.  The rifle has a 10 inch Mod0 free float tube with 3 additional accessory rails that can be mounted in the users desired location, Magpul MOE buttstock, Magpul MOE pistol grip and a 2 stage trigger.  Rifle is compatible with the SR25 and LR308 magazines.

Lewis Machine and Tool - .308 MWS - Slick Side Upper Receiver - 16 inch Stainless Steel - Flat Matte Black Rifle (LM8MWSF)


LM8MWS .308 slick upper receiver with 16 inch stainless steel 1:11.25" twist, .308 tactically flat matte blackened barrel, standard semi-auto bolt carrier group, tactical charging handle assembly, LM308MWS lower with SOPMOD buttstock, two stage trigger group, ambi selector, and ambi mag release. 

CMMG .308 Mk3 16 inch Stainless Steel Carbine Battle Rifle (38AEA9A)


The Mk3 CBR (Carbine Battle Rifle) utilizes the same core of the standard Mk3 rifles, but features an optimized tapered barrel profile.

CMMG 16 Inch M4 Rifle - 5.56 NATO (55A8433)


The CMMG 16 Inch M4 Rifle features a 16 Inch cold hammer forged, M4 profile barrel manufactured from 4150 chrome-moly, chambered in 5.56 NATO with a 1:7 twist, carbine length gas system and 1/2-28 threaded muzzle.  Rifle contains a milspec lower receiver parts kit with a standard trigger, forged upper receiver, forged lower receiver that is RDIAS/RLL compatible, F-marked front sight tower with sling swivel and bayonet lug, Magpul MBUS rear sight, M4 style plastic handguard, 6 position buttstock with sling swivel and an A2 style pistol grip.  Rifle weights 6lbs empty.

Desert Tech SRS A1 Rifle - .338 Lapua Magnum


The SRS rifle is a lightweight, bolt action operated, magazine-fed firearm.  It is the shortest precision rifle system in existence.  It is almost a foot shorter than most conventional precision rifles, because it utilizes a bullpup configuration as well as a collapsible bolt design.  This compact design shifts the weight rearward creating not only a shorter weapon, but also a perfectly balanced rifle.  The SRS rifle was designed around the 338 Lapua Magnum, however it can quickly be converted between to any of the following cartridges: 308 WIN, 243 WIN, 260 REM, 7MM WSM, 6.5x47mm Lapua, 6.

Desert Tech HTI Rifle - .50 BMG


The HTI (Hard Target Interdiction) rifle is a lightweight, bolt action operated, magazine-fed firearm.  The HTI’s bullpup design makes it the most compact and portable Hard Target Interdiction rifle in the world, 10.5 pounds lighter and 11.5 inches shorter than the M107 - .50 BMG rifle currently in use. The HTI sniper rifle is a convertible multi-caliber extreme range weapon. Caliber options include .50 BMG, .416 Barret, .408 CheyTac, and .375 CheyTac. All chamberings are capable of 2000+ yard engagements with phenomenal penetration.

Rock River Arms MID A4 - LIGHTWEIGHT – Rifle


The Rock River Arms MID A4  - LIGHTWEIGHT - Rifle features a Rock River Arms 16 Inch lightweight contour barrel, chambered in 5.56 NATO with a 1:9 twist, midlength gas system, and a 1/2-28 threaded muzzle.  Also features a forged A4 upper receiver, forged LAR-15 lower receiver, RRA  2 stage match trigger, RRA 6 position stock, RRA overmolded A2 pistol grip, front sight tower with bayonet lug, A2 flash hider, and midlength plastic handguards.

Comes complete with plastic storage case, owners manual, and (1) 30rd magazine. 

Rock River Arms - LAR-47 - CAR A4 Rifle - 7.62x39mm


The Rock River Arms - LAR-47 - CAR A4 Rifle features a 16 inch chrome-lined, HBAR barrel chambered in 7.62x39mm with a 1:10 RH twist, carbine length gas system, and a 5/8-24 threaded muzzle.  Built on a Rock River Arms proprietary, forged LAR-47 lower receiver with a RRA two-stage trigger, LAR-47 winter trigger guard, ambidextrous magazine release, 6 position tactical CAR buttstock, and an A2 pistol grip.  Rock River Arms developed a proprietary, forged A4 upper receiver with a chrome bolt carrier group, single rail gas block with sling swivel, carbine length plastic handguard, and an A2 st